1
|
Klip A, De Bock K, Bilan PJ, Richter EA. Transcellular Barriers to Glucose Delivery in the Body. Annu Rev Physiol 2024; 86:149-173. [PMID: 38345907 DOI: 10.1146/annurev-physiol-042022-031657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
Glucose is the universal fuel of most mammalian cells, and it is largely replenished through dietary intake. Glucose availability to tissues is paramount for the maintenance of homeostatic energetics and, hence, supply should match demand by the consuming organs. In its journey through the body, glucose encounters cellular barriers for transit at the levels of the absorbing intestinal epithelial wall, the renal epithelium mediating glucose reabsorption, and the tight capillary endothelia (especially in the brain). Glucose transiting through these cellular barriers must escape degradation to ensure optimal glucose delivery to the bloodstream or tissues. The liver, which stores glycogen and generates glucose de novo, must similarly be able to release it intact to the circulation. We present the most up-to-date knowledge on glucose handling by the gut, liver, brain endothelium, and kidney, and discuss underlying molecular mechanisms and open questions. Diseases associated with defects in glucose delivery and homeostasis are also briefly addressed. We propose that the universal problem of sparing glucose from catabolism in favor of translocation across the barriers posed by epithelia and endothelia is resolved through common mechanisms involving glucose transfer to the endoplasmic reticulum, from where glucose exits the cells via unconventional cellular mechanisms.
Collapse
Affiliation(s)
- Amira Klip
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada;
| | - Katrien De Bock
- Laboratory of Exercise and Health, Department of Health Sciences and Technology, Swiss Federal Institute of Technology (ETH), Zürich, Switzerland
| | - Philip J Bilan
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada;
| | - Erik A Richter
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
2
|
Wu Q, Hu Z, Wang Z, Che Y, Zhang M, Zheng S, Xing K, Zhong X, Chen Y, Shi F, Yuan S. Glut10 restrains neointima formation by promoting SMCs mtDNA demethylation and improving mitochondrial function. Transl Res 2023; 260:1-16. [PMID: 37220836 DOI: 10.1016/j.trsl.2023.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 05/07/2023] [Accepted: 05/09/2023] [Indexed: 05/25/2023]
Abstract
Neointimal hyperplasia is a major clinical complication of coronary artery bypass graft and percutaneous coronary intervention. Smooth muscle cells (SMCs) play a vital roles in neointimal hyperplasia development and undergo complex phenotype switching. Previous studies have linked glucose transporter member 10(Glut10) to the phenotypic transformation of SMCs. In this research, we reported that Glut10 helps maintain the contractile phenotype of SMCs. The Glut10-TET2/3 signaling axis can arrest neointimal hyperplasia progression by improving mitochondrial function via promotion of mtDNA demethylation in SMCs. Glut10 is significantly downregulated in both human and mouse restenotic arteries. Global Glut10 deletion or SMC-specific Glut10 ablation in the carotid artery of mice accelerated neointimal hyperplasia, while Glut10 overexpression in the carotid artery triggered the opposite effects. All of these changes were accompanied by a significant increase in vascular SMCs migration and proliferation. Mechanistically, Glut10 is expressed primarily in the mitochondria after platelet-derived growth factor-BB (PDGF-BB) treatment. Glut10 ablation induced a reduction in ascorbic acid (VitC) concentrations in mitochondria and mitochondrial DNA (mtDNA) hypermethylation by decreasing the activity and expression of the Ten-eleven translocation (TET) protein family. We also observed that Glut10 deficiency aggravated mitochondrial dysfunction and decreased the adenosinetriphosphate (ATP) content and the oxygen consumption rate, which also caused SMCs to switch their phenotype from contractile to synthetic phenotype. Furthermore, mitochondria-specific TET family inhibition partially reversed these effects. These results suggested that Glut10 helps maintain the contractile phenotype of SMCs. The Glut10-TET2/3 signaling axis can arrest neointimal hyperplasia progression by improving mitochondrial function via the promotion of mtDNA demethylation in SMCs.
Collapse
Affiliation(s)
- Qi Wu
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Surgery Laboratory, Renmin Hospital of Wuhan University, Wuhan, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhipeng Hu
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Surgery Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhiwei Wang
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Surgery Laboratory, Renmin Hospital of Wuhan University, Wuhan, China.
| | - Yanjia Che
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Surgery Laboratory, Renmin Hospital of Wuhan University, Wuhan, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Min Zhang
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Surgery Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Sihao Zheng
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Surgery Laboratory, Renmin Hospital of Wuhan University, Wuhan, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Kai Xing
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Surgery Laboratory, Renmin Hospital of Wuhan University, Wuhan, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiaohan Zhong
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Surgery Laboratory, Renmin Hospital of Wuhan University, Wuhan, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yuanyang Chen
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Surgery Laboratory, Renmin Hospital of Wuhan University, Wuhan, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Feng Shi
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Surgery Laboratory, Renmin Hospital of Wuhan University, Wuhan, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Shun Yuan
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Surgery Laboratory, Renmin Hospital of Wuhan University, Wuhan, China; Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| |
Collapse
|
3
|
Ariyo OW, Kwakye J, Sovi S, Aryal B, Ghareeb AFA, Hartono E, Milfort MC, Fuller AL, Rekaya R, Aggrey SE. Glucose Supplementation Improves Performance and Alters Glucose Transporters' Expression in Pectoralis major of Heat-Stressed Chickens. Animals (Basel) 2023; 13:2911. [PMID: 37760311 PMCID: PMC10525872 DOI: 10.3390/ani13182911] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/08/2023] [Accepted: 09/10/2023] [Indexed: 09/29/2023] Open
Abstract
Glucose level in birds' tissue decreases due to heat stress (HS)-induced reduction in feed intake (FI); impairing metabolism and growth. The effect of glucose supplementation on the performance of broiler chickens was evaluated under thermoneutral (TN) and HS conditions. Glucose was supplemented at 0 and 6% under TN-(25 °C) and HS-(25 °C-35 °C-25 °C) conditions. The treatments were TN + 0%-glucose (TN0); TN + 6%-glucose (TN6), HS + 0%-glucose (HS0) and HS + 6%-glucose (HS6). There were 6 replicates (19 birds each)/treatment. Heat and glucose supplementation were applied from d28-35. At d35, Pectoralis (P.) major was sampled from one bird/replicate to determine glucose transporters' mRNA expression. Heat application lowered (p < 0.05) FI, body weight gain, and increased feed and water conversion ratios. Glucose supplementation increased total energy intake by 4.9 and 3.2% in TN and HS groups, respectively but reduced FI under TN and HS conditions. The P. major- and drumstick-yield reduced (p < 0.05) in HS0 compared to TN0, TN6 and HS6. Under HS, glucose supplementation improved eviscerated carcass weight by 9% and P. major yield by 14%. Glucose supplementation increased SGLT1 expression with/without heat treatment while HS independently increased the expression of GLUT 1, 5 and 10. Glucose supplementation under HS could improve performance of broilers.
Collapse
Affiliation(s)
- Oluwatomide Williams Ariyo
- NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA 30602, USA; (O.W.A.); (J.K.); (S.S.); (B.A.); (A.F.A.G.); (E.H.); (M.C.M.); (A.L.F.)
| | - Josephine Kwakye
- NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA 30602, USA; (O.W.A.); (J.K.); (S.S.); (B.A.); (A.F.A.G.); (E.H.); (M.C.M.); (A.L.F.)
| | - Selorm Sovi
- NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA 30602, USA; (O.W.A.); (J.K.); (S.S.); (B.A.); (A.F.A.G.); (E.H.); (M.C.M.); (A.L.F.)
| | - Bikash Aryal
- NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA 30602, USA; (O.W.A.); (J.K.); (S.S.); (B.A.); (A.F.A.G.); (E.H.); (M.C.M.); (A.L.F.)
| | - Ahmed F. A. Ghareeb
- NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA 30602, USA; (O.W.A.); (J.K.); (S.S.); (B.A.); (A.F.A.G.); (E.H.); (M.C.M.); (A.L.F.)
| | - Evan Hartono
- NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA 30602, USA; (O.W.A.); (J.K.); (S.S.); (B.A.); (A.F.A.G.); (E.H.); (M.C.M.); (A.L.F.)
| | - Marie C. Milfort
- NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA 30602, USA; (O.W.A.); (J.K.); (S.S.); (B.A.); (A.F.A.G.); (E.H.); (M.C.M.); (A.L.F.)
| | - Alberta L. Fuller
- NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA 30602, USA; (O.W.A.); (J.K.); (S.S.); (B.A.); (A.F.A.G.); (E.H.); (M.C.M.); (A.L.F.)
| | - Romdhane Rekaya
- Department of Animal and Dairy Science, University of Georgia, Athens, GA 30602, USA;
| | - Samuel E. Aggrey
- NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA 30602, USA; (O.W.A.); (J.K.); (S.S.); (B.A.); (A.F.A.G.); (E.H.); (M.C.M.); (A.L.F.)
| |
Collapse
|
4
|
Jian L, Wu Q, Min X, Li B, Zhang M, Wu Z, Hu X, Ren Z, Wang Z, Hu Z. GLUT10 is a novel immune regulator involved in lung cancer immune cell infiltration and predicts worse survival when transcriptionally downregulated. Heliyon 2023; 9:e13836. [PMID: 36873535 PMCID: PMC9981930 DOI: 10.1016/j.heliyon.2023.e13836] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 02/06/2023] [Accepted: 02/13/2023] [Indexed: 02/19/2023] Open
Abstract
Background Glucose transporter 10 (GLUT10) is encoded by the SLC2A10 gene. Our recent investigations have shown that GLUT10 is not only involved in glucose metabolism but also involved in the body's immune response to cancer cells. However, the role of GLUT10 in tumor prognosis and in tumor immunity has not been reported. Methods We knocked down SLC2A10 and performed transcriptome sequencing to analyse the biological function of GLUT10 and found that GLUT10 may be involved in immune signaling. Then, we studied the expression level of SLC2A10 in cancers by the Oncomine database and Tumor Immune Estimation Resource (TIMER) site. We also evaluated the prognostic potential of SLC2A10 in different cancers using the Kaplan‒Meier plotter database and PrognoScan online software. The correlations between SLC2A10 expression and immune infiltrates were analysed by TIMER. In addition, correlations between SLC2A10 expression and gene marker sets of immune infiltrates were analysed by TIMER and Gene Expression Profiling Interactive Analysis (GEPIA). Immunofluorescence staining of cyclooxygenase-2 (COX-2) and GLUT10 in lung cancer tissue and adjacent tissue was performed to confirm our findings from the database research. Results Knocking down SLC2A10 widely activated immune and inflammatory signaling. SLC2A10 was abnormally expressed in several tumors. The expression level of SLC2A10 was closely correlated with cancer prognosis. Low SLC2A10 expression was related to poorer prognosis and increased malignancy of lung cancer. Lung cancer patients with low expression of SLC2A10 have a much shorter median survival time than patients with high expression of SLC2A10. SLC2A10 expression is closely related to the infiltration of different types of immune cells, particularly macrophages. Both database research and lung cancer sample research revealed that GLUT10 might modulate immune cell infiltration via the COX-2 pathway. Conclusions By transcriptome experiments, database studies, and human sample studies, we found that GLUT10 is a new immune signaling molecule involved in tumor immunity, especially in the immune cell infiltration of lung adenocarcinoma (LUAD). GLUT10 may modulate the immune cell infiltration of LUAD via the COX-2 pathway.
Collapse
Affiliation(s)
- Lijuan Jian
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, China
| | - Qi Wu
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, China
| | - Xinping Min
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, China
| | - Bowen Li
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, China
| | - Min Zhang
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, China
| | - Zhiyong Wu
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, China
| | - Xiaoping Hu
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, China
| | - Zongli Ren
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, China
| | - Zhiwei Wang
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, China
| | - Zhipeng Hu
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, China
| |
Collapse
|
5
|
Yazdani S, Bilan PJ, Jaldin-Fincati JR, Pang J, Ceban F, Saran E, Brumell JH, Freeman SA, Klip A. Dynamic glucose uptake, storage, and release by human microvascular endothelial cells. Mol Biol Cell 2022; 33:ar106. [PMID: 35921166 DOI: 10.1091/mbc.e22-04-0146] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Endothelia determine blood-to-tissue solute delivery, yet glucose transit is poorly understood. To illuminate mechanisms, we tracked [3H]-2-deoxyglucose (2-DG) in human adipose-tissue microvascular endothelial cells. 2-DG uptake was largely facilitated by the glucose transporters GLUT1 and GLUT3. Once in the cytosol, >80% of 2-DG became phosphorylated and ∼20% incorporated into glycogen, suggesting that transported glucose is readily accessible to cytosolic enzymes. Interestingly, a fraction of intracellular 2-DG was released over time (15-20% over 30 min) with slower kinetics than for uptake, involving GLUT3. In contrast to intracellular 2-DG, the released 2-DG was largely unphosphorylated. Glucose release involved endoplasmic reticulum-resident translocases/phosphatases and was stimulated by adrenaline, consistent with participation of glycogenolysis and glucose dephosphorylation. Surprisingly, the fluorescent glucose derivative 2-NBD-glucose (2-NBDG) entered cells largely via fluid phase endocytosis and exited by recycling. 2-NBDG uptake was insensitive to GLUT1/GLUT3 inhibition, suggesting poor influx across membranes. 2-NBDG recycling, but not 2-DG efflux, was sensitive to N-ethyl maleimide. In sum, by utilizing radioactive and fluorescent glucose derivatives, we identified two parallel routes of entry: uptake into the cytosol through dedicated glucose transporters and endocytosis. This reveals the complex glucose handling by endothelial cells that may contribute to glucose delivery to tissues.
Collapse
Affiliation(s)
- Samaneh Yazdani
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4
| | - Philip J Bilan
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4
| | | | - Janice Pang
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4
| | - Felicia Ceban
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4
| | - Ekambir Saran
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4
| | - John H Brumell
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada, M5S 1A1.,Institute of Medical Science, University of Toronto, Toronto, ON, Canada, M5S 1A1.,SickKids IBD Centre, Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4
| | - Spencer A Freeman
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4.,Department of Biochemistry, University of Toronto, Toronto, ON, Canada, M5S 1A1
| | - Amira Klip
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada, M5G 0A4.,Department of Biochemistry, University of Toronto, Toronto, ON, Canada, M5S 1A1.,Department of Paediatrics, University of Toronto, Toronto, ON, Canada, M5S 1A1.,Department of Physiology, University of Toronto, Toronto, ON, Canada, M5S 1A1
| |
Collapse
|
6
|
Faiyaz-Ul-Haque M, Mubarak M, AbdulWahab A, AlRikabi AC, Alsaeed AH, Al-Otaiby M, Nawaz Z, Zaidi SHE, Basit S. Ultrastructure abnormalities of collagen and elastin in Arab patients with arterial tortuosity syndrome. J Cutan Pathol 2022; 49:618-622. [PMID: 35302653 DOI: 10.1111/cup.14228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 01/13/2022] [Accepted: 03/13/2022] [Indexed: 11/26/2022]
Abstract
Arterial tortuosity syndrome (ATS) is a rare autosomal recessive disease characterized by elongation and tortuosity of the large and medium sized arteries. ATS patients display features that are also found in Ehlers-Danlos syndromes (EDS) patients. ATS is caused by pathogenic mutations in the SLC2A10 gene, which encodes for the glucose transporter, GLUT10. The study aimed at examining the ultrastructure of skin for abnormalities that can explain the loose skin and arterial phenotypes of Arab patients with the p.S81R mutation in SLC2A10. Forty eight patients with SLC2A10 mutation were recruited for this study. Skin biopsy specimens from 3 children with ATS and a healthy child were examined by electron microscopy to determine the ultrastructure of collagen and elastin. Histopathologic staining of sections from tissue biopsy specimens were also performed. In the skin from ATS patients, large spaces are discovered among collagen fibrils suggesting disorganization of the collagen structures. Furthermore, elastin fiber contents and their thickness are reduced in the skin. In small muscular arteries in the skin from ATS patients, discontinued internal elastic lamina, lack of myofilaments, and disorganized medial smooth muscle cells with vacuolated cytoplasm are present. The disorganization of collagen fibrils and reduced elastin contents in the skin may explain the loose skin phenotype of ATS patients similar to the EDS patients. The lack of elastin in small muscular arteries may have contributed to the development of arterial tortuosity in these patients. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Muhammad Faiyaz-Ul-Haque
- Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
- Department of Pathology and Laboratory Medicine, Hamad Medical Corporation, Doha, Qatar
| | - Mohammed Mubarak
- Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Atqah AbdulWahab
- Department of Pediatrics, Hamad Medical Corporation, Doha, Qatar
| | - Ammar C AlRikabi
- Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Abbas H Alsaeed
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Maram Al-Otaiby
- Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Zafar Nawaz
- Department of Pathology and Laboratory Medicine, Hamad Medical Corporation, Doha, Qatar
| | - Syed H E Zaidi
- Genomics, Ontario Institute for Cancer Research, Toronto, Canada
| | - Sulman Basit
- Center for Genetics and Inherited Diseases, Taibah University Almadinah Almunawwarah, Medina, Saudi Arabia
| |
Collapse
|
7
|
Boel A, Burger J, Vanhomwegen M, Beyens A, Renard M, Barnhoorn S, Casteleyn C, Reinhardt DP, Descamps B, Vanhove C, van der Pluijm I, Coucke P, Willaert A, Essers J, Callewaert B. Slc2a10 knock-out mice deficient in ascorbic acid synthesis recapitulate aspects of arterial tortuosity syndrome and display mitochondrial respiration defects. Hum Mol Genet 2021; 29:1476-1488. [PMID: 32307537 DOI: 10.1093/hmg/ddaa071] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/08/2020] [Accepted: 04/15/2020] [Indexed: 12/19/2022] Open
Abstract
Arterial tortuosity syndrome (ATS) is a recessively inherited connective tissue disorder, mainly characterized by tortuosity and aneurysm formation of the major arteries. ATS is caused by loss-of-function mutations in SLC2A10, encoding the facilitative glucose transporter GLUT10. Former studies implicated GLUT10 in the transport of dehydroascorbic acid, the oxidized form of ascorbic acid (AA). Mouse models carrying homozygous Slc2a10 missense mutations did not recapitulate the human phenotype. Since mice, in contrast to humans, are able to intracellularly synthesize AA, we generated a novel ATS mouse model, deficient for Slc2a10 as well as Gulo, which encodes for L-gulonolactone oxidase, an enzyme catalyzing the final step in AA biosynthesis in mouse. Gulo;Slc2a10 double knock-out mice showed mild phenotypic anomalies, which were absent in single knock-out controls. While Gulo;Slc2a10 double knock-out mice did not fully phenocopy human ATS, histological and immunocytochemical analysis revealed compromised extracellular matrix formation. Transforming growth factor beta signaling remained unaltered, while mitochondrial function was compromised in smooth muscle cells derived from Gulo;Slc2a10 double knock-out mice. Altogether, our data add evidence that ATS is an ascorbate compartmentalization disorder, but additional factors underlying the observed phenotype in humans remain to be determined.
Collapse
Affiliation(s)
- Annekatrien Boel
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium.,Ghent-Fertility and Stem cell Team, Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - Joyce Burger
- Department of Molecular Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands.,Department of Clinical Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Marine Vanhomwegen
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Aude Beyens
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium.,Department of Dermatology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Marjolijn Renard
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Sander Barnhoorn
- Department of Molecular Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands.,Department of Clinical Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Christophe Casteleyn
- Department of Morphology, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium
| | - Dieter P Reinhardt
- Department of Anatomy and Cell Biology, Faculty of Medicine, Faculty of Dentistry, McGill University, H3A 0C7 Montreal, Quebec, Canada
| | - Benedicte Descamps
- Infinity (IBiTech-MEDISIP), Department of Electronics and Information Systems, Ghent University, 9000 Ghent, Belgium
| | - Christian Vanhove
- Infinity (IBiTech-MEDISIP), Department of Electronics and Information Systems, Ghent University, 9000 Ghent, Belgium
| | - Ingrid van der Pluijm
- Department of Molecular Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands.,Department of Clinical Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands.,Department of Vascular Surgery, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Paul Coucke
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Andy Willaert
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Jeroen Essers
- Department of Molecular Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands.,Department of Clinical Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands.,Department of Vascular Surgery, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands.,Department of Radiation Oncology, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Bert Callewaert
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| |
Collapse
|
8
|
Pozzer D, Invernizzi RW, Blaauw B, Cantoni O, Zito E. Ascorbic Acid Route to the Endoplasmic Reticulum: Function and Role in Disease. Antioxid Redox Signal 2021; 34:845-855. [PMID: 31867990 DOI: 10.1089/ars.2019.7912] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Significance: Humans cannot synthesize ascorbic acid (AscH2) (vitamin C), so deficiencies in dietary AscH2 cause the life-threatening disease of scurvy and many other diseases. After oral ingestion, plasma AscH2 concentrations are strictly controlled by transporters, which are required for entry into the cell and into intracellular organelles. Recent Advances: Besides its general antioxidant function, AscH2 is a cofactor for endoplasmic reticulum (ER)-localized collagen hydroxylases. Its important role in ER homeostasis is also highlighted by the fact that AscH2 deficiency in auxotrophic species triggers ER stress. Critical Issues: Characterizations of the molecular basis of diseases suggest that intracellular AscH2 deficiency is due not only to limited dietary access but also to its limited intracellular transport and net loss under conditions of intracellular hyperoxidation in the ER. This essay will offer an overview of the different transporters of vitamin C regulating its intracellular concentration, its function inside the ER, and the phenotypes of the diseases that can be triggered by increased depletion of this vitamin in the ER. Future Directions: When considering the benefits of increasing dietary AscH2, it is important to consider pharmacokinetic differences in the bioavailability between orally and intravenously administered AscH2: the latter bypasses intestinal absorption and is, therefore, the only route that can lead to the high plasma concentrations that may provide some health effects, and it is this route that needs to be chosen in clinical trials for those diseases associated with a deficiency of AscH2. Antioxid. Redox Signal. 34, 845-855.
Collapse
Affiliation(s)
- Diego Pozzer
- Istituto di Ricerche Farmacologiche Mario Negri-IRCCS, Milan, Italy
| | | | - Bert Blaauw
- Department of Biomedical Sciences, University of Padua, Padua, Italy
- Venetian Institute of Molecular Medicine, Padua, Italy
| | - Orazio Cantoni
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Ester Zito
- Istituto di Ricerche Farmacologiche Mario Negri-IRCCS, Milan, Italy
| |
Collapse
|
9
|
Glucose transporters in adipose tissue, liver, and skeletal muscle in metabolic health and disease. Pflugers Arch 2020; 472:1273-1298. [PMID: 32591906 PMCID: PMC7462924 DOI: 10.1007/s00424-020-02417-x] [Citation(s) in RCA: 207] [Impact Index Per Article: 51.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 06/01/2020] [Accepted: 06/05/2020] [Indexed: 12/13/2022]
Abstract
A family of facilitative glucose transporters (GLUTs) is involved in regulating tissue-specific glucose uptake and metabolism in the liver, skeletal muscle, and adipose tissue to ensure homeostatic control of blood glucose levels. Reduced glucose transport activity results in aberrant use of energy substrates and is associated with insulin resistance and type 2 diabetes. It is well established that GLUT2, the main regulator of hepatic hexose flux, and GLUT4, the workhorse in insulin- and contraction-stimulated glucose uptake in skeletal muscle, are critical contributors in the control of whole-body glycemia. However, the molecular mechanism how insulin controls glucose transport across membranes and its relation to impaired glycemic control in type 2 diabetes remains not sufficiently understood. An array of circulating metabolites and hormone-like molecules and potential supplementary glucose transporters play roles in fine-tuning glucose flux between the different organs in response to an altered energy demand.
Collapse
|
10
|
Jiang CL, Jen WP, Tsao CY, Chang LC, Chen CH, Lee YC. Glucose transporter 10 modulates adipogenesis via an ascorbic acid-mediated pathway to protect mice against diet-induced metabolic dysregulation. PLoS Genet 2020; 16:e1008823. [PMID: 32453789 PMCID: PMC7274451 DOI: 10.1371/journal.pgen.1008823] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 06/05/2020] [Accepted: 05/02/2020] [Indexed: 11/25/2022] Open
Abstract
The development of type 2 diabetes mellitus (T2DM) depends on interactions between genetic and environmental factors, and a better understanding of gene-diet interactions in T2DM will be useful for disease prediction and prevention. Ascorbic acid has been proposed to reduce the risk of T2DM. However, the links between ascorbic acid and metabolic consequences are not fully understood. Here, we report that glucose transporter 10 (GLUT10) maintains intracellular levels of ascorbic acid to promote adipogenesis, white adipose tissue (WAT) development and protect mice from high-fat diet (HFD)-induced metabolic dysregulation. We found genetic polymorphisms in SLC2A10 locus are suggestively associated with a T2DM intermediate phenotype in non-diabetic Han Taiwanese. Additionally, mice carrying an orthologous human Glut10G128E variant (Glut10G128E mice) with compromised GLUT10 function have reduced adipogenesis, reduced WAT development and increased susceptibility to HFD-induced metabolic dysregulation. We further demonstrate that GLUT10 is highly expressed in preadipocytes, where it regulates intracellular ascorbic acid levels and adipogenesis. In this context, GLUT10 increases ascorbic acid-dependent DNA demethylation and the expression of key adipogenic genes, Cebpa and Pparg. Together, our data show GLUT10 regulates adipogenesis via ascorbic acid-dependent DNA demethylation to benefit proper WAT development and protect mice against HFD-induced metabolic dysregulation. Our findings suggest that SLC2A10 may be an important HFD-associated susceptibility locus for T2DM. Environmental triggers may amplify genetically determined disease susceptibility, especially for carriers of rare variants with relatively large individual effect sizes, making these polymorphisms highly informative for predicting individualized clinical risk and preventing disease. Since transitions in dietary pattern have greatly contributed to the increased prevalence of obesity and accelerated the spread of the T2DM epidemic worldwide, a better understanding of gene-diet interactions in T2DM will be useful for disease prediction and prevention. Here, we demonstrate that polymorphisms in the gene encoding GLUT10 are associated with a T2DM intermediate phenotype in non-diabetic human subjects. Additionally, mice that carry a GLUT10 rare variant have reduced WAT development and are susceptible for HFD-induced T2DM. We further demonstrate that GLUT10 is highly expressed in preadipocytes, where it regulates intracellular ascorbic acid levels and ascorbic acid-dependent DNA demethylation to control adipogenesis. Preadipocytes carrying the GLUT10 rare variant or with knockdown of GLUT10 expression have reduced the adipogenesis. Thus, we are able to conclude that GLUT10 regulates adipogenesis via ascorbic acid-dependent DNA demethylation to affect WAT development and contribute to the sensitivity of HFD-induced metabolic dysregulation.
Collapse
Affiliation(s)
- Chung-Lin Jiang
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan
| | - Wei-Ping Jen
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan
| | - Chang-Yu Tsao
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan
| | - Li-Ching Chang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chien-Hsiun Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yi-Ching Lee
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan
- * E-mail:
| |
Collapse
|
11
|
Lizák B, Szarka A, Kim Y, Choi KS, Németh CE, Marcolongo P, Benedetti A, Bánhegyi G, Margittai É. Glucose Transport and Transporters in the Endomembranes. Int J Mol Sci 2019; 20:ijms20235898. [PMID: 31771288 PMCID: PMC6929180 DOI: 10.3390/ijms20235898] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 11/16/2019] [Accepted: 11/21/2019] [Indexed: 12/18/2022] Open
Abstract
Glucose is a basic nutrient in most of the creatures; its transport through biological membranes is an absolute requirement of life. This role is fulfilled by glucose transporters, mediating the transport of glucose by facilitated diffusion or by secondary active transport. GLUT (glucose transporter) or SLC2A (Solute carrier 2A) families represent the main glucose transporters in mammalian cells, originally described as plasma membrane transporters. Glucose transport through intracellular membranes has not been elucidated yet; however, glucose is formed in the lumen of various organelles. The glucose-6-phosphatase system catalyzing the last common step of gluconeogenesis and glycogenolysis generates glucose within the lumen of the endoplasmic reticulum. Posttranslational processing of the oligosaccharide moiety of glycoproteins also results in intraluminal glucose formation in the endoplasmic reticulum (ER) and Golgi. Autophagic degradation of polysaccharides, glycoproteins, and glycolipids leads to glucose accumulation in lysosomes. Despite the obvious necessity, the mechanism of glucose transport and the molecular nature of mediating proteins in the endomembranes have been hardly elucidated for the last few years. However, recent studies revealed the intracellular localization and functional features of some glucose transporters; the aim of the present paper was to summarize the collected knowledge.
Collapse
Affiliation(s)
- Beáta Lizák
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, 1094 Budapest, Hungary; (B.L.); (C.E.N.); (G.B.)
| | - András Szarka
- Laboratory of Biochemistry and Molecular Biology, Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, 1111 Budapest, Hungary;
| | - Yejin Kim
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary; (Y.K.); (K.-s.C.)
| | - Kyu-sung Choi
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary; (Y.K.); (K.-s.C.)
| | - Csilla E. Németh
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, 1094 Budapest, Hungary; (B.L.); (C.E.N.); (G.B.)
| | - Paola Marcolongo
- Department of Molecular and Developmental Medicine, University of Siena, 53100 Siena, Italy; (P.M.); (A.B.)
| | - Angelo Benedetti
- Department of Molecular and Developmental Medicine, University of Siena, 53100 Siena, Italy; (P.M.); (A.B.)
| | - Gábor Bánhegyi
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, 1094 Budapest, Hungary; (B.L.); (C.E.N.); (G.B.)
| | - Éva Margittai
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary; (Y.K.); (K.-s.C.)
- Correspondence: ; Tel.: +36-459-1500 (ext. 60311); Fax: +36-1-2662615
| |
Collapse
|
12
|
Species-Specific Glucose-6-Phosphatase Activity in the Small Intestine-Studies in Three Different Mammalian Models. Int J Mol Sci 2019; 20:ijms20205039. [PMID: 31614497 PMCID: PMC6829527 DOI: 10.3390/ijms20205039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 10/04/2019] [Accepted: 10/09/2019] [Indexed: 12/16/2022] Open
Abstract
Besides the liver, which has always been considered the major source of endogenous glucose production in all post-absorptive situations, kidneys and intestines can also produce glucose in blood, particularly during fasting and under protein feeding. However, observations gained in different experimental animals have given ambiguous results concerning the presence of the glucose-6-phosphatase system in the small intestine. The aim of this study was to better define the species-related differences of this putative gluconeogenic organ in glucose homeostasis. The components of the glucose-6-phosphatase system (i.e., glucose-6-phosphate transporter and glucose-6-phosphatase itself) were analyzed in homogenates or microsomal fractions prepared from the small intestine mucosae and liver of rats, guinea pigs, and humans. Protein and mRNA levels, as well as glucose-6-phosphatase activities, were detected. The results showed that the glucose-6-phosphatase system is poorly represented in the small intestine of rats; on the other hand, significant expressions of glucose-6-phosphate transporter and of the glucose-6-phosphatase were found in the small intestine of guinea pigs and homo sapiens. The activity of the recently described fructose-6-phosphate transporter–intraluminal hexose isomerase pathway was also present in intestinal microsomes from these two species. The results demonstrate that the gluconeogenic role of the small intestine is highly species-specific and presumably dependent on feeding behavior (e.g., fructose consumption) and the actual state of metabolism.
Collapse
|
13
|
Decreased Nuclear Ascorbate Accumulation Accompanied with Altered Genomic Methylation Pattern in Fibroblasts from Arterial Tortuosity Syndrome Patients. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:8156592. [PMID: 30800210 PMCID: PMC6360052 DOI: 10.1155/2019/8156592] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 11/28/2018] [Indexed: 12/12/2022]
Abstract
Ascorbate requiring Fe2+/2-oxoglutarate-dependent dioxygenases located in the nucleoplasm have been shown to participate in epigenetic regulation of gene expression via histone and DNA demethylation. Transport of dehydroascorbic acid is impaired in the endomembranes of fibroblasts from arterial tortuosity syndrome (ATS) patients, due to the mutation in the gene coding for glucose transporter GLUT10. We hypothesized that altered nuclear ascorbate concentration might be present in ATS fibroblasts, affecting dioxygenase activity and DNA demethylation. Therefore, our aim was to characterize the subcellular distribution of vitamin C, the global and site-specific changes in 5-methylcytosine and 5-hydroxymethylcytosine levels, and the effect of ascorbate supplementation in control and ATS fibroblast cultures. Diminished nuclear accumulation of ascorbate was found in ATS fibroblasts upon ascorbate or dehydroascorbic acid addition. Analyzing DNA samples of cultured fibroblasts from controls and ATS patients, a lower global 5-hydroxymethylcytosine level was found in ATS fibroblasts, which could not be significantly modified by ascorbate addition. Investigation of the (hydroxy)methylation status of specific regions in six candidate genes related to ascorbate metabolism and function showed that ascorbate addition could stimulate hydroxymethylation and active DNA demethylation at the PPAR-γ gene region in control fibroblasts only. The altered DNA hydroxymethylation patterns in patient cells both at the global level and at specific gene regions accompanied with decreased nuclear accumulation of ascorbate suggests the epigenetic role of vitamin C in the pathomechanism of ATS. The present findings represent the first example for the role of vitamin C transport in epigenetic regulation suggesting that ATS is a compartmentalization disease.
Collapse
|
14
|
Zoppi N, Chiarelli N, Ritelli M, Colombi M. Multifaced Roles of the αvβ3 Integrin in Ehlers-Danlos and Arterial Tortuosity Syndromes' Dermal Fibroblasts. Int J Mol Sci 2018; 19:ijms19040982. [PMID: 29587413 PMCID: PMC5979373 DOI: 10.3390/ijms19040982] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 03/19/2018] [Accepted: 03/24/2018] [Indexed: 02/07/2023] Open
Abstract
The αvβ3 integrin, an endothelial cells’ receptor-binding fibronectin (FN) in the extracellular matrix (ECM) of blood vessels, regulates ECM remodeling during migration, invasion, angiogenesis, wound healing and inflammation, and is also involved in the epithelial mesenchymal transition. In vitro-grown human control fibroblasts organize a fibrillar network of FN, which is preferentially bound on the entire cell surface to its canonical α5β1 integrin receptor, whereas the αvβ3 integrin is present only in rare patches in focal contacts. We report on the preferential recruitment of the αvβ3 integrin, due to the lack of FN–ECM and its canonical integrin receptor, in dermal fibroblasts from Ehlers–Danlos syndromes (EDS) and arterial tortuosity syndrome (ATS), which are rare multisystem connective tissue disorders. We review our previous findings that unraveled different biological mechanisms elicited by the αvβ3 integrin in fibroblasts derived from patients affected with classical (cEDS), vascular (vEDS), hypermobile EDS (hEDS), hypermobility spectrum disorders (HSD), and ATS. In cEDS and vEDS, respectively, due to defective type V and type III collagens, αvβ3 rescues patients’ fibroblasts from anoikis through a paxillin-p60Src-mediated cross-talk with the EGF receptor. In hEDS and HSD, without a defined molecular basis, the αvβ3 integrin transduces to the ILK-Snail1-axis inducing a fibroblast-to-myofibroblast-transition. In ATS cells, the deficiency of the dehydroascorbic acid transporter GLUT10 leads to redox imbalance, ECM disarray together with the activation of a non-canonical αvβ3 integrin-TGFBRII signaling, involving p125FAK/p60Src/p38MAPK. The characterization of these different biological functions triggered by αvβ3 provides insights into the multifaced nature of this integrin, at least in cultured dermal fibroblasts, offering future perspectives for research in this field.
Collapse
Affiliation(s)
- Nicoletta Zoppi
- Division of Biology and Genetics, Department of Molecular and Translational Medicine, School of Medicine, University of Brescia, 25123 Brescia, Italy.
| | - Nicola Chiarelli
- Division of Biology and Genetics, Department of Molecular and Translational Medicine, School of Medicine, University of Brescia, 25123 Brescia, Italy.
| | - Marco Ritelli
- Division of Biology and Genetics, Department of Molecular and Translational Medicine, School of Medicine, University of Brescia, 25123 Brescia, Italy.
| | - Marina Colombi
- Division of Biology and Genetics, Department of Molecular and Translational Medicine, School of Medicine, University of Brescia, 25123 Brescia, Italy.
| |
Collapse
|